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All Forums >> Radios, Batteries, Clubhouse and more >> Batteries & Chargers >> A123Racing Support >> lathe a123 cells to save weight
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lathe a123 cells to save weight - 9/19/2007 7:24:35 PM   
hairyllama


 

Posts: 9
Joined: 9/13/2007
From: , USA
Status: offline 		just curious... has anyone thought about or tried to drop an M1 cell into a lathe and carve down it's shell to save some weight?
       Post #: 1

RE: lathe a123 cells to save weight - 9/19/2007 8:04:00 PM   
guver


 

Posts: 8541
Joined: 3/7/2003
From: LaGrange, OH, USA
Status: online 		I doubt the wall thickness is sufficient to save much weight. Cutting it in half will save how much?

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(in reply to hairyllama)
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RE: lathe a123 cells to save weight - 9/19/2007 8:55:35 PM   
Red Scholefield



Posts: 4779
Joined: 12/8/2001
From: Newberry, FL, USA
Status: offline
quote:

ORIGINAL: hairyllama

just curious... has anyone thought about or tried to drop an M1 cell into a lathe and carve down it's shell to save some weight?


.008 thick - I don't think so.

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Red S.
AMA 951 Leader Member

(in reply to hairyllama)
       Post #: 3

RE: lathe a123 cells to save weight - 9/19/2007 11:57:06 PM   
hairyllama


 

Posts: 9
Joined: 9/13/2007
From: , USA
Status: offline 		Interesting... is it a myth that the case is the cause of all the extra weight in li-ion verses li-polymer? Is there something in the cells that make them heavier than lipos?

(in reply to Red Scholefield)
       Post #: 4

RE: lathe a123 cells to save weight - 9/20/2007 12:08:25 AM   
Red Scholefield



Posts: 4779
Joined: 12/8/2001
From: Newberry, FL, USA
Status: offline
quote:

ORIGINAL: hairyllama

Interesting... is it a myth that the case is the cause of all the extra weight in li-ion verses li-polymer? Is there something in the cells that make them heavier than lipos?



You are talking Li-ion vs LiPo, yes the cylindrical can contributes more weight on the Li-Ion than the Mylar plastic envelope does on the LiPos. But the A123 (Lithium-Iron Phosphate) are a different animal and cannot be compared with the same standards. There is nothing else to compare it to at this time.

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Red S.
AMA 951 Leader Member

(in reply to hairyllama)
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RE: lathe a123 cells to save weight - 9/20/2007 2:53:23 PM   
A123 Racing


 

Posts: 102
Joined: 8/25/2006
From: Hopkinton, MA, USA
Status: online 		Red has the right info here. Our chemistry is what makes the cell heavier; the aluminum canister contributes very little to the higher energy density of the cell. I would look in another direction to shed some weight on your plane, shaving the cells will get you very very little, not to mention the risk of destroying the cell is pretty darn high.

Power . Safety . Life

Brian



(in reply to Red Scholefield)
       Post #: 6

RE: lathe a123 cells to save weight - 9/22/2007 8:00:14 PM   
hairyllama


 

Posts: 9
Joined: 9/13/2007
From: , USA
Status: offline 		Thanks for that info!!

(in reply to A123 Racing)
       Post #: 7

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